Wrench.



PATIENTEID JUNE 5, 1906.

BBL-822,790.

J.T.UR BAGH.

I I WRENCH, H APPLICATION FILED SEPT.28.1905.

. alwewtoz J? ZVrdch I I my, Gum/wags.

I Witnesses UNITED STATES PATENT OFFICE.

JOHN T. UR BACH, OF BALTIMORE, MARYLAND, ASSIGNOR OF ONE-EIGHTH TO MAR-EEN M. DUVALL, OF BALTIMORE, MARYLAND.

WRENCH.

Specification of Letters Patent.

Patented June 5, 1906.

Application filed September 28,1905. Serial No- 280,494.

- To all whom, it may concern.-

Be it known that I, JOHN T. URBACH, a

citizen of the United States, residing at Baltimore, State of Maryland, have invented certain new and useful Improvements in Wrenches, of which the following is a specification. T

The object of my invention is to'provide an improved construction of wrench which will be durable and efficient in operation and in which the movable jaw isso mounted with relationto the fixed jaw that a quick and -nice adjustment of the parts may be face to the teeth of the shank, the spindle of said actuating-nut extending into the movable jaw, which latter .is provided with an interior recess in which a supplementary .or auxiliary adjusting block or nut is mounted, said latter nut having a loose motion to a certain degree within the movable jaw and being provided with an annular recess at one end in which a. spring is situatedso as to allow aslight degree of lost motion to the movable jaw whereby it may be adjusted nicely andcompensate for any irregularities in the nut or other article to be clamped. For -a full description of the invention and the merits thereof and also to acquire a knowledge of the details of construction of the means for effecting the result reference is to be had to the following description and accompanying drawings, in Which Figure 1 is a side elevation otmy improved wrench, the movable jaw being shown partly insection: F 2 is a transverse sectionon the line a: in o 1. Figs.

-3 and 4 are transverse sections on the line 3 'y of. Fig. 1, these views showing theadjustingnut in .two difierent positions. Fig. 5 is a detail perspective view of the adjusting-nut and its spindle.

lorresponding and like parts are referred to in the following description and indicated reference characters.

with its shank 2, and the latter is provide at one end with any The movable jaw 5 is mounted to slide upon the shank of the fixed jaw and is provided downwardly-opening recess 6, which constilar adjusting-block 7. The adjusting-block 7 is of such size with relation to the length of the housing that it will have a certain amount of play therein longitudinally. The adjustit. in engagement with its scrcw threads is a threaded spindle 9, which has bearing in the its rear end a mainadjusting-nut 10.

tion of its surface designed to enga c with the teeth 4 of the shank 2, and it is a so provided with a smooth or plane surface 11, so that when such surface is presented to the teeth 4 the movable 'aw may be slid bodily forward or backward to effect a uick adjustment of the two jaws with re ation' to each other. The adjusting-nut 10 is provided with a finger-piece 12 at one side,

manipulated. 1 The adjustin- -block 7 presents its lower face to the toot ed edge 4' of the shank and back and forth. The block is provided in the end adjacent the fixed jaw with an annular recess 14, and within said recess there is mounted a spring 15, designed to hold the movable jaw forward with respect to the signed to be pressed into the annular recess 14' when the movable jaw is forced into engagement with a nut or the like,rand said recess thereby forming a protecting-means mashed or otherwise injured, the shoulders against the adjacent portion of. the movable jaw. as will be evident by referenceto the adjacent the toothed edge 4 with an interior,

tutes a housing for the preferably rectangu- .end of the movable jaw and which carrlelslat 11s latter is provided with threads around a porformed by the annular rim 16 aroundthe recess 14 abutting under such 'condltlo'ns in all the views of the drawings by the same The movable jaw 1 is preferably inte ral I form of handle 3 and is provided with pitched teeth 4 along one edge.

ing-block 7 is interiorly screw-threaded, as indicated at 8, and mounted'to turn within 1 whereby it may be conveniently turned and I slides thereover as the movable jaw is slid f l adjusting-block in its housing and being de- ICC for the spring and preventing it from being drawings. The pitch. of the threads on thespindle 9 corresponds in the present instance to the pitch of the threads on the adjustingnut 10, although it is evident that my invention is not limited to this exact arrangement, and in the present instance such threads are pitched so that an ap roximate half-turn of the adjusting-nut an the consequent halfturn oi its spindle 9 will likewise effect an advance of the adjusting-block 7 with respect to the spindle and the conseque nt advance of the movable jaw a distance equal to what it would travel if the adjustingblock were not provided and the actuating or adjusting nut 10 were given a complete revolution. 1

In the operation of the device the adjust ing-nut 10 is manipulated so as to bring its smooth or plane surface 11 in registry with the toothed edge 4 of the shank, and the movable jaw may be thus quickly shifted to effect a ross adjustment thereof with re-- spect to t e fixed jaw. Then to effect-a nice adjustment of the parts the adjusting-nut 10 is given a half-turn in the advancedirection, and this will result in said nut and the parts to which it is attached being advanced somewhat farther along the shank and at the same time turning of the adjusting-nut 10, and the consequent rotation of its spindle 9 will eiiect an advance to a similar degree of the movable aw 5 upon the spindle through the .in-st/rumentality of the adjusting-block 7. It will thus be seen that two degrees of movement are provided, one of the adjusting-nut 10 with respect to the toothed edge 4 of the shank and another with respect to the adjusting-block on the spindle 9. in this manner a nice adjustment of the movable jaw may be quickly tiected by a minivmum of rotation of the parts.

While my invention is here shown and de scribed as embodied in a wrench construction, it is manifest that it is also a plicable to vises and other clamps without (ihparting I in any Wise from the scope of the invention.

Having thus described the invention, what is claimed as new is- 1. A wrench comprisin a fixed jaw and a toothed shank, a movablie jaw mounted to slide on said shank and provided with an interior housing, an adjusting-block mounted in said'housing and having longitudinal play therein, a spindle threaded in said block and provided with an adjusting-nut meshing with said teeth, and a spring in said housing interposed between one end of the block and of the shank, a threaded spindle mounted in said block and provided with an adjustingnut meshing with said toothed edge, and a spring in said housing interposed between t e end of the block and adjacent portion of the movable jaw and designed to press the movable jaw toward the fixed jaw.

23. A wrench comprising a fixed jaw and a shank having a toothed edge, a movable jaw mounted to slide upon said shank and provided with an interior housing, a rectangular adjusting-block mounted to move longitudi-- nally in said housing and rovided with a threaded bore, a spindle wor ring in said. bore and provided with an adjusting-nut meshing with said toothed edge, the said s indle being mounted in an end of the mova le jaw and having a limited longitudinal movement therein said nut being provided with, a smooth surface whereby the movable jaw and its parts may he slid bodily along the shank, and a spring in said housing interposed between that end of theblock which is adjacent the fixed jaw and the adjacent pow tron ot the movable aw.

4. A wrench comprising a fixed jaw and. a shank having a toothed edge, and a movable jaw mounted to slide on said shank and pro-- vided with an interior housing, an adjusting block mounted to move longitudinally in said housing and provided with a recess in one end and also provided with a threaded bore, a splindle working in said bore and provided wit an adjusting-nut meshing with said toothed edge, and a spring in said housing between the end of the adjustingeblock and the adjacent portion of the movable jaw,

said spring being designed for aceommodzu tlOlilIl the said recess when the block is forced up against the ad acentportion of the movable jaw.

In testimony whereof I atiix. my signature in presence of two witnesses.

JOHN T. UREAQH. it. s]

Witnesses J. D. YOAKLEY, W. N. W-oonson. 

